J/AJ/163/101 TESS-Keck survey. IX. Radial velocities of HD1919139 (Lubin+, 2022)
TESS-Keck survey.
IX. Masses of three sub-Neptunes orbiting HD191939 and the discovery of a warm
jovian plus a distant substellar companion.
Lubin J., Van Zandt J., Holcomb R., Weiss L.M., Petigura E.A.,
Robertson P., Murphy J.M.A., Scarsdale N., Batygin K., Polanski A.S.,
Batalha N.M., Crossfield I.J.M., Dressing C., Fulton B., Howard A.W.,
Huber D., Isaacson H., Kane S.R., Roy A., Beard C., Blunt S., Chontos A.,
Dai F., Dalba P.A., Gary K., Giacalone S., Hill M.L., Mayo A., Mocnik T.,
Kosiarek M.R., Rice M., Rubenzahl R.A., Latham D.W., Seager S., Winn J.N.,
Gary K.
<Astron. J., 163, 101-101 (2022)>
=2022AJ....163..101L 2022AJ....163..101L (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Stars, G-type; Spectra, optical; Radial velocities
Keywords: Exoplanet astronomy; Exoplanet dynamics
Abstract:
Exoplanet systems with multiple transiting planets are natural
laboratories for testing planetary astrophysics. One such system is
HD191939 (TOI1339), a bright (V=9) and Sun-like (G9V) star, which TESS
found to host three transiting planets (b, c, and d). The planets have
periods of 9, 29, and 38days each with similar sizes from 3 to
3.4R⊕. To further characterize the system, we measured the
radial velocity (RV) of HD191939 over 415days with Keck/HIRES and
APF/Levy. We find that Mb=10.4±0.9M⊕ and
Mc=7.2±1.4M⊕, which are low compared to most known planets
of comparable radii. The RVs yield only an upper limit on Md
(<5.8M⊕ at 2σ). The RVs further reveal a fourth planet (e)
with a minimum mass of 0.34±0.01MJup and an orbital period of
101.4±0.4days. Despite its nontransiting geometry, secular
interactions between planet e and the inner transiting planets
indicate that planet e is coplanar with the transiting planets
(Δi<10°). We identify a second high-mass planet (f) with 95%
confidence intervals on mass between 2 and 11MJup and period between
1700 and 7200 days, based on a joint analysis of RVs and astrometry
from Gaia and Hipparcos. As a bright star hosting multiple planets
with well-measured masses, HD191939 presents many options for
comparative planetary astronomy, including characterization with JWST.
Description:
We acquired RVel observations with Keck/HIRES at the W.M.Keck
Observatory on Maunakea, Hawaii, between 2019 November and 2020
December. We used a high signal-to-noise ratio (S/N) template from
Keck/HIRES to generate a deconvolved stellar spectral template (DSST).
We took all RVel observations with a warm iodine cell in the light
path for wavelength calibration, with a median S/N of ∼216/pixel at
the iodine wavelength region of ∼500nm.
We also acquired RVel observations with the Automated Planet Finder
telescope (APF) at Lick Observatory in California between 2019
December and 2020 December. At the beginning of the baseline, we
observed twice per night and binned the two observations. After 2020
February, we changed our observing strategy to obtain one spectrum per
night owing to time constraints within our survey.
Objects:
------------------------------------------------
RA (2000) DE Designation(s)
------------------------------------------------
20 08 05.76 +66 51 02.1 HD 191939 = HD 191939
------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 46 182 Radial velocity time serie
--------------------------------------------------------------------------------
See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/A+A/550/A53 : Public code ARoME for modeling the RM effect (Boue+, 2013)
J/ApJ/770/69 : Kepler planet candidates radii (Petigura+, 2013)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/ApJ/785/15 : Transit times Kepler-79's known planets (Jontof-Hutter+, 2014)
J/AJ/154/107 : California-Kepler Survey (CKS). I. 1305 stars (Petigura+, 2017)
J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)
J/ApJ/844/102 : KICstar parallaxes from asteroseismology vs Gaia (Huber+, 2017)
J/AJ/155/48 : California-Kepler Survey. V. Masses and radii (Weiss+, 2018)
J/AJ/156/102 : The TESS Input Catalog & Candidate Target List (Stassun+, 2018)
J/AJ/156/264 : California-Kepler Survey.VII. Planet radius gap (Fulton+, 2018)
J/AJ/157/52 : Radial velocity obs. in super-Earth systems (Bryan+, 2019)
J/AJ/157/145 : HIRES RVs of three compact, multiplanet systems (Mills+, 2019)
J/A+A/640/A81 : Abundances of 72 solar-type stars (Nissen+, 2020)
J/AJ/159/241 : TESS-Keck Survey. I. HD332231 Radial Velocities (Dalba+, 2020)
J/AJ/159/280 : Gaia-Kepler stellar prop. catalog.I. KIC stars (Berger+, 2020)
J/AJ/159/281 : Characteristics of 335 KOI stars (Gilbert+, 2020)
J/ApJ/898/119 : Archival Keck HIRES spectra analyzed with Cannon (Rice+, 2020)
J/A+A/649/A26 : TOI-178 six transiting planets (Leleu+, 2021)
J/AJ/161/56 : The TESS-Keck Survey. II. RVs of TOI-561 (Weiss+, 2021)
J/AJ/161/70 : Rvel for WASP-107 with HIRES & CORALIE (Piaulet+, 2021)
J/AJ/161/119 : The TESS-Keck survey. IV. Rvel for WASP-107 (Rubenzahl+, 2021)
J/AJ/162/89 : HIRES radial velocity follow up for Kepler-129 (Zhang+, 2021)
J/AJ/162/215 : TESS-Keck survey.V. Rvel of HD63935 (Scarsdale+, 2021)
J/ApJS/254/42 : Hipparcos-Gaia (EDR3) Catalog of Accelerations (Brandt, 2021)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 F14.6 d BJD [2458795/2459254] Barycentric Julian Date
16- 22 F7.3 m/s RVel [-59.4/32.6] Radial velocity
24- 28 F5.3 m/s e_RVel [0.9/9] Error on RVel
30- 34 F5.3 --- S-Index [0.04/0.26] S Index value
36- 40 F5.3 --- e_S-Index [0.001/0.002] Error on S-Index
42- 46 A5 --- Inst Instrument used; APF or HIRES
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Dalba et al. Paper I. 2020AJ....159..241D 2020AJ....159..241D Cat. J/AJ/159/241
Weiss et al. Paper II. 2021AJ....161...56W 2021AJ....161...56W Cat. J/AJ/161/56
Dai et al. Paper III. 2020AJ....160..193D 2020AJ....160..193D
Rubenzahl et al. Paper IV. 2021AJ....161..119R 2021AJ....161..119R Cat. J/AJ/161/119
Scarsdale et al. Paper V. 2021AJ....162..215S 2021AJ....162..215S Cat. J/AJ/162/215
MacDougall et al. Paper VI. 2021AJ....162..265M 2021AJ....162..265M Cat. J/AJ/162/265
Lange et al. Paper VII. 2024AJ....167..282L 2024AJ....167..282L Cat. J/AJ/167/282
Dalba et al. Paper VIII. 2022AJ....163...61D 2022AJ....163...61D Cat. J/AJ/163/61
Lubin et al. Paper IX. 2022AJ....163..101L 2022AJ....163..101L This catalog
Turtelboom et al. Paper XI. 2022AJ....163..293T 2022AJ....163..293T Cat. J/AJ/163/293
Chontos et al. Paper XII. 2022AJ....163..297C 2022AJ....163..297C
MacDougall et al. Paper XIII. 2022AJ....164...97M 2022AJ....164...97M Cat. J/AJ/164/97
Van Zandt et al. Paper XIV. 2023AJ....165...60V 2023AJ....165...60V Cat. J/AJ/165/60
MacDougall et al. Paper XV. 2023AJ....166...33M 2023AJ....166...33M Cat. J/AJ/166/33
Murphy et al. Paper XVI. 2023AJ....166..153M 2023AJ....166..153M Cat. J/AJ/166/153
Beard et al. Paper XVII. 2024AJ....167...70B 2024AJ....167...70B Cat. J/AJ/167/70
Desai et al. Paper XVIII. 2024AJ....167..194D 2024AJ....167..194D Cat. J/AJ/167/194
Hill et al. Paper XIX. 2024AJ....167..151H 2024AJ....167..151H
Polanski et al. Paper XX. 2024ApJS..272...32P 2024ApJS..272...32P
Pidhorodetska et al. Paper XXII. 2024AJ....168..135P 2024AJ....168..135P Cat. J/AJ/168/135
(End) Prepared by [AAS], Coralie Fix [CDS], 14-Apr-2022